Well, it seems he's just as good at dishing it out after he revealed his favourite prank.

It's a bit cruel, but the Gravity actor - well-known for his practical jokes - enjoys messing with any co-stars unfortunate enough to decide to go on a diet.

He told E! News: "I do enjoy whenever an actor's trying to lose weight having the wardrobe people take in their clothes.

"It just makes me laugh, watching them eating like a grape the next day. And they do it for weeks. It's good fun."

It sounds rather mean from where we're sitting, but we still couldn't help but laugh.

George's friend Julia Roberts was on hand over the weekend to honour him at the Britannia Awards, and he revealed he warned her off trying to embarrass him at the event, because he'd return the favour when he gets the chance in the next few weeks.

He said: "I will take her down. She has to walk a little on eggshells with me right now."